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If 0.214 mol of Argon occupies 652 mL, what would the volume of 0.375 be? What would be the volume of 0.375 mol of butane gas under the same temperature and pressure conditions?
Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine:
To plot the calibration curve, you need to prepare iron solutions with known concentration and measure their absorbance.
A 55.0 rm mL sample of this glucose solution was diluted to 0.500 rm L. How many grams of glucose are in 100. rm mL of the final solution?
Afterwards 1.00 mL gets transfered into a 100 mL volumetric flask wich is then being diluted to volume with 0.05 M H2SO4. What is the concentration of quininehydrochlorid?
Radiation with a wavelength of 58.4 nm interacts with a hydrogen atom and induces the ejection of an electron. What is the kinetic energy of the departing electron in eV?
What is the formula of a compound if a sample of the compound contains 0.273 mol X, 0.410 mol Y, and 0.546 mol Z?
certain first-order reaction has a rate constant of 2.8×10-2 s-1 at 18 C. What is the value of k at 62 C if Ea = 116 kj/mol?
Calculate the theoretical yield of when 126 g of C2H5Cl reacts with 223 g of Cl2, assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
A 10.0 L container contains a mixture of 0.50 mole of H2 (2g/mole) and 0.50 mile of SO2 (64g/mole) at 25 degrees celsius.
A sample containing 0.187 g Cl- is dissolved in 50.0 mL water. How many moles oc Cl- ion are in the solution? What is the molarity of Cl- ion in the solution?
Consider an insulated system containing 80 g of liquid water and 80 g of ice at equilibrium under atmospheric pressure. A total of 16 g of steam at 120 C is admitted to the system. What is the phase
If 17.9 mL of 0.800 M~rm HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
A piece of galena has a volume of 4.7 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
The wavelength of the emitted photon corresponds to the difference in energy between the two energy levels. What were the principal quantum numbers of the initial and intermediate excited states invol
6.0 moles of hydrogen are introduced into a 2.0 L sealed vessel and allowed to equilibrate at 200ºC, what is the equilibrium concentration of the ethene (C2H4) in the vessel?
If a 1.00 L flask is set up with an initial concentration of 0.282 mol/L COCl2, calculate the equilibrium concentration of carbon monoxide in mol/L.
What is the enthalpy change (DH), in kJ, when 14.80 g of hydrogen gas is combusted completely in presence of oxygen gas to produce water?
An aqueous sulfuric acid solution containing 571.6 g of H2SO4 per liter of solution at 20°C has a density of 1.3294 g/mL. Calculate (a) the molarity, (b) the molality, (c) the percent by mass,
When a 2.00-g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity of 1.083 kJ·K-1, the temperature decreases by 0.460 K. Calculate the molar heat of solution
A 89 gram solution of silver nitrate contains 14 grams of AgNO3. What is the percent by mass of silver nitrate in this solution?
If 10,000 L of air were bubbled through an acidic iodide solution (at STP) and was then back titrated with 19.4 mL of a 1.2x10-4 M Na2S2O3 solution to reach equivalence, what is the concentration o
4NH3 5O2 → 4NO 6H2O 1.85g NH3 react with 3.39g O2. How many g NO & H2O form? How many g of excess reactant remain after limiting reactant used ?
The herbicide level in the soil in a corn field was measured at 3.0 ppb. How many micrograms (ug) of herbicide are present in 10 lb of soil?
A 1.80-L flask is filled with propane gas (C3H8), at 1.00 atm and -19.4°C. What is the mass of the propane in the flask?